Among the interesting things I've noticed after looking at the Kitt Peak and our own local sky both say and night is that the general state of the sky at both places is very similar on a remarkable number of occasions. Tonight it happens we started out with some cirrus that's now moved out, whereas down there it's starting to come in from the southwest. \Brian -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.